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Finding the Fourth Proportional to 304,565.60, 420,159.75 and 197,170.40

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Solution

The fourth proportional to 304,565.60, 420,159.75 and 197,170.40 is: 272,004.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,565.60 : 420,159.75 = 197,170.40 : x
  2. Step 2: Convert to fraction form
    304,565.60/420,159.75 = 197,170.40/x
  3. Step 3: Cross multiply
    304,565.60x = 420,159.75 × 197,170.40
  4. Step 4: Simplify right side
    304,565.60x = 82,843,065,971.40
  5. Step 5: Solve for x
    x = 82,843,065,971.40/304,565.60
  6. Step 6: Final answer
    x = 272,004.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.